A novel leaky-wave antenna (LWA) utilizing spoof surface plasmon polaritons (SSPPs) excitation is proposed with continuous scanning range from endfire to forward. The designed transmission line unit supports two SSPPS modes, of which the 2nd order mode is applied in the design. A novel strategy has been devised to excite the spatial radiation of the –1st order harmonics by arranging periodic counter changed sinusoidal structures on both sides of the SSPPs transmission line. Both full-wave simulation and measurement results show that the proposed LWA presents wide scanning angle from endfire to forward. In the frequency range from 4 GHz to 10 GHz, LWAs achieve scanning from 90° to +20°, covering the entire backward quadrant continuously.

中文翻译：

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欺骗性表面等离子体激元极化子激发漏波天线，连续扫描范围从端射到正射

提出了一种利用欺骗性表面等离子体激元极化子（SSPPs）激发的新型漏波天线（LWA），其连续扫描范围从端火到向前。设计的传输线单元支持两种SSPPS模式，在设计中应用了二阶模式。通过在SSPPs传输线的两侧布置周期性的反向变化的正弦结构，已设计出一种新颖的策略来激发–1次谐波的空间辐射。全波仿真和测量结果均表明，所提出的LWA从端火到向前都具有较宽的扫描角度。在4 GHz至10 GHz的频率范围内，LWA可以实现从90°到+ 20°的扫描，连续覆盖整个反向象限。